Dash light replacement
(English is not my native language, so please be patient when you read.)
To get the cluster out, you first have to pull off that little thing under the cluster (unscrew the 3 screws first). It covers 3 other screws that holds the cluster. (If you have wood under your cluster you should cover it with tape before you pull it out.) Get the screws out and carefully pull out the cluster. Since the cables are longer on the right side of the cluster, it's easyest to rotate the cluster a bit so you can see behind it on the right side.
When you are able to put a hand up behind the cluster, you have to unscrew the indicator light line where the 'check engine' light is. (Cables for this unit cannot be unplugged.) Then you unplugg all other cables you can reach.
As I remember there is 5 connectors, and 3 different ways to unplugg. The one right behind the speedometer has to be pulled to the right (side of the cluster). The two small ones behind the tachometer has to be pulled straight out. The bigger connector behind the tachometer and the one above the fuel gauge has a plastic brigde/lock on their center that you have to pull out before you can pull out the connector it self.
When all the cables are disconnected, the rest is easy.
About bulbs in the shiftwindow (I asume this is the line in your dash showing P-R-N-D-3-2-1):
Bulbs in the shiftwindow is not ment to be replaced. Audi does not sell bulbs that fit. If you go to a dealer they'll say you'll have to replace the whole display unit, which cost $200!
However, the bulbs in the shift window is soddered on a circuit board, and you should get someone who knows how to sodder to do the replacement. There is a IC between the two bulbs in the display unit, and this chip will be damaged by heat, so be carefull!
I spent about 5 hours, driving to all car dealers and electronic stores in 3 cities to find a bulb I could use. (And I am a EE masters student, living next to Silicon Valley!)
I ended up with a bulb without a socket, but it works.
good luck
-pg
One piece of advice I'd have for you...those bulbs tend to have amazingly similar life spans...do your self a favor and replace them ALL while you're in there. Otherwise you'll find yourself taking apart the dash 4 or 5 times over the next 6 months.
Bulbs for the gear selector display is totally different (has to be soddered on a circuitboard). These bulbs doesn't have any text telling their specs.
-p
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1. Lower and extend the steering wheel as far as possible.
2. Place a towel over the steering switch assembly cover to prevent scratching the cover from the instrument dsiplay.
3. Remove the (2) screws from underneath the lower trim strip and slide it to the left to remove (there is a pin on the right side that you much clear).
4. Remove the (3) Phillips screws that retain the instrument display into the dash.
5. Pull the display out so that you can access the wiring connectors on the back side. Disconnect the wires/lights from the display (remember where they all go!). The two large 26-pin connectors have a center slide that locks the connector to the panel - you have to slide the center lock up to remove these two connectors.
6. Once all of the wiring connectors have been disconnected, you can remove the instrument display. Assembly is the reverse of the above steps.
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